Improvement in machines for screw cutting and other purposes



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125,983 PatentedApr|23,872.

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Improvement in Machines for Screw-Cutting and oher Purposes.

N0. 125,983, PatentedAprilzsJsz.

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PIERRE OLINGER, OF JERSEY CTTYNEW JERSEY, AND HENRY S. MANNING ANDDARWIN A. GREENE, OF NEW YORK, vN. Y., ASSIGNORS TO HENRY S. MANN'LNG,OF NEW YORK CITY.

IMPROVEMENT IN MACHINES FOR SCREW CUTTING AND OTHER PURPOSES.

Specification forming part of Letters Patent No. 125,983, dated April23, 1872.

Specification describing a certain Improve-v ment in Machines for ScrewCutting, Tapping,

and other operations, invented by PIERRE OLENGER, of Jersey City, Hudsoncounty, New Jersey, and HENRY S. MANNING and DARWm A. GREENE, both of New York city.

The improved machine is adapted for use on the bench in small shopswhere it is to be worked by hand; but it may also be driven by power.Itis a cheap tool, capable of operating a drill or tap, or screw-cuttingdies, and it possesses certain advantages over any tool for the purposebefore known to us.

The following is a description of what we consider the best means ofcarrying out the invention. The accompanying drawing forms a part ofthis speciiication.

Figure l is a side elevation, showing the ma! chine in condition for'cutting a thread on a long rod or bolt. Fig. 2 is a face view of the boxwhich holds the cutting-dies. Fig. 3 is a side view, partly in section,showing the ma-4 chine in condition for drilling. It is shown asequipped with the peculiar impelling-lever referred to below assometimes employed when a bolt is being cut which is too long to allowthe use of a crank. With a small drill, as shown, a crank may usually bepreferred. Fig. 4 is a View of the impelling-lever and a portion of theadjacent gear-wheel, in which the pawl engages. The view is at rightangles to that in Fig. 3. The remaining figures are details relating toscrew cutting.

Fig. 5 is a plan view of a portion witha solid die for screw cutting,mounted in the tail-center in the rear of the blank-dies. Thus equippedthe blank-dies do not, as in Fig. l, hold the rod against turning, buton the contrary allow the rod to turn and stand at a distance therefrom,so as to produce no direct effect thereon. Fig. 6 is a front view of thetail-center thus equipped. Figs. 7 and 8 represent a sectional die forscrew cutting, adapted to be mounted in place of the blank dies in thetail-center.

Similar letters of reference indicate like parts in all the figures.

The fixed framing, which isbolted down upon the bench, is formed in asingle casting, which we will designate when necessary by the singleletter A, and the several parts thereof by the letters A1 A2, &c. Thebase is A1, and the uprights thereon are marked A2. A horizontal piece,which serves asa way for the traveling tail-center vis marked A3, vandtwo uprights which support the bearin gs for the main shaft are markedA4. The main shaft is marked B,

and is hollow throughout. One endis splined to receive a gear-wheel, B1,and also. to receive a crank, C. The other end is enlarged to form asquare casin g, B2, adapted to receive cuttingdies, solid or divided,and to confine it or them by the screw b2. D is a smaller gear-wheelrevolving on a fixed stud, A5. By transferring the crank C to the bossof this wheell) an increased purchase or operating force is attained, aswill be obvious. The operating crank may be transferred from the shaft Bto the boss of the wheel D and back again, at pleasure, being secured oneither by the pinching-screw c, which takes in slight recesses made toreceive it. The tail-centers are exchangeable. We will mark themrespectively G and M, and describe first the tail-center G, which isadapted for screw cutting, and as shown in positionfor -use in Fig. 1.This part G is always free to slide on the way A3. It is adapted toreceive two blank-dies, Hl H2, which are introduced in the openingrepresented, and are forced together by the screws g1 g2. To cut ascrew, the bolt is introduced through the blankdies Hl H2 whenseparated, and then seized firmly by turning the screws g1 g2. Next, thetailcenter G, with the bolt attached, is pressed forward, (peculiarmeans for doing this conveniently and powerfully will be presentlydcscribed,) and the shaft B being turned by the crank C the die or diesin the box or casing B2 seize and commence to cut the proper thread onthe end of the bolt, The tail-center G and its attached bolt may nowbeleft free, and the crank C being turned the bolt is cut properly, thetail-center Gmoving forward to accommodate the required motion ofthe'bolt as the cutting proceeds. In cutting a long'bolt the blankdies Hmay be caused to let go, and the tailcenter moved back, and the screwsg1 g2 be again tightened several times, and, as -the work proceeds, thethreaded portion of the bolt will 2 y c y125,983

extend through thehollow interior of the shaft B. When, by such gradualmovement of the bolt forward, or from any other cause, a bolt extendsout beyond the opposite end of the shaft B, it will be in the way of thehand in rotating the crank. In such case both hands may be employed topass'the crank around, letting go with one and taking hold with theother at each revolution. This mode of operating, however, can only beemployed when the crank is applied directly to the shaft B. When it isapplied to the boss of the wheel D the crank cannot' be revolvedentirely around. For this emergency we provide a lever and pawl, servingas a ratchet, which may be employed on the boss of the wheel D, or madelarger and applied to the shaft B, as shown in Figs. 3 and 4. Byvibrating the lever with this ratchet an intermittent rotary motion isgiven, andthe screw-cutting proceeds intermit tently and less rapidly.

Referring, now, to the other end of the machine, we have provided holesa in thepart A3, and a hand-lever, I i, adapted to employ these holes asfulcrums for urging forward the tailcenter Gr. The point fi of the leverbeing applied in one of the holes, and the lever operated, thetail-center is pressed'forward gradually, and with any required degreeof force.

YIt may sometimes be desirable to turn thebolt and to hold thecutting-die in the tail-center.

`We have provided for holding a large solid in Figs. 5 and 6, and itwill be Jfirmly secured by operating the screws g1 g2. Any ordinary orsuitable mea-ns being employed to hold the bolt firmly, and compel it toturn with the rotation of the shaft B, thev screw Vcutting proceeds asbefore.

We will now describe the machine with the other tail-center, M, as shownin Fig. 3. This tail-center is divided for a considerable height, and weiind cast-iron is sufficiently elastic to allow the lower cheeks tospring open and slide easily on the way A3, orbe clamped tightly t0-gether by the screw m, as may be preferred. NVhen this screw m isslackened this tail-center M may move freely backward and forward. Whenthe proper position is found it is clamped firmly by ahalf turn, more orless, of the screw m. N is a sliding center, acting in the tailcenterstock M. It is operated by the screw O, turned by the hand-wheel O. Thepoint, if one is allowed to go with it, should be removed, and the plainend of the piece Nbe alone employed in drilling, as shown.

In drilling with this machine we mount the drill in a removable socketpiece, J, having a side screw, j, which performs the double function ofsecuring the drill in the socket-piece J and also of locking thesocket-piece J and its contents within the box or casingv B2, so that itis compelled to revolve therewith. The entire socket-piece J an d itscontents are held in the shaft B by the pinching-screw b1. When thedrill is in position, and is rotated v by the operating of the crank,the work to be drilled is vurged forward by operating the screw O, andthus moving forward the center N, as will be obvious.

We are aware that most of the details of our machine have been beforeemployed separately,1but the cost of a multiplicity of tools is thegreat drawback to the success and usefulness of small shops. Ourinvention, by combining in one small cheap machine the capacity for agreat variety of work, makes it possible for inventors and othermechanics with small means, and at a distance from large shops, toexecute work which would be otherwise impracticable. Although we havespoken of the long piece operated on as a bolt, it will be obvious thatit may work also on rods of any name, or on gas-pipes and hollow piecesof any kind or name. Its greatest advantages are felt in treatin ghollow pipes and tubes. The cutting oif of nipples or short threadedlengths of tubing for joining and extending pipes, which is one of theuses of this tool, supplies a want which gastters have long felt, andthe extraordinary convenience of effecting all the several ends by onesmall cheap machine will be readily appreciated.

In order to conveniently cut off short lengths of bolts or tubing wehave provided an attachment analogous to a slide-rest, and shift thematerial forward intermittently and run the cutter inward. This additionis more particularly useful in producing very short lengths oftubing,threaded or not, for couplings and analogous uses. This arrangement isrepresented is position for use in Figs. 9, 10, a-nd l1, where Fig. 9 isa side elevation of a portion of the apparatus with the hand-wheel forscrewing forward the cutter removed. Fig. 10 is an end view, and Fig. lla plan view. In these figures the cutter which cuts off the tube isrepresented by B., the tool-stand which holds it by B1; and the slidewhich carries it transversely to the ways or length of the machine byR2. The screw which feeds the cutter forward is marked S, and thehand-wheel which operates it S. These parts are mounted in a manneranalogous to the lathe-tool in a stock,

VT, which is clamped upon the ways in any deour hands this 26th dayofJanuary, 1872, in the presence of two subscribing witnesses.

PIERRE OLINGER. H. S. MANNING. D. A. GREENE.

Witnesses to the signatures of OLINGER and MANNING:

EDGAR B. WATmsoN, CHARLES G. BETTs. Witnesses to signature of GREENETHOMAS D. STETsoN, WM. C. DEY.

